package com.qk.management.web.filter;

import cn.hutool.core.util.ObjectUtil;
import com.qk.common.util.JwtUtils;
import io.jsonwebtoken.Claims;
import jakarta.servlet.*;
import jakarta.servlet.annotation.WebFilter;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;

import java.io.IOException;

/**
 * @author fantuan
 * @created 2025/10/11 10:58
 * @description 登录校验的过滤器
 */
@Slf4j
//@WebFilter("/*")
public class LoginCheckFilter implements Filter {

    private static final String LOGIN_PATH = "/login";
    private static final String TOKEN_HEADER_NAME = "token";
    @Override
    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws IOException, ServletException {

        HttpServletRequest request = (HttpServletRequest) req;
        HttpServletResponse response = (HttpServletResponse) resp;

        String path = request.getRequestURI();
        log.info("-----拦截的请求路径是{}------", path);

        boolean isLoginReq = ObjectUtil.equal(path, LOGIN_PATH);
        if (isLoginReq) {
            chain.doFilter(request, response);
            return;
        }

        String token = request.getHeader(TOKEN_HEADER_NAME);
        if(ObjectUtil.isEmpty(token)){
            response.setStatus(401);
            return;
        }

        try {
            Claims claims =JwtUtils.parseToken(token);
            String username = claims.get("username", String.class);
            Object id = claims.get("id");
            chain.doFilter(request, response);
            return;
        }catch (Exception e){
            log.error("-----------token验证失败：{}--------------", e.getMessage());
            response.setStatus(401);
        }

    }
}
